air cushion unhindered, other acids dissolved in the aquarium water (e.g. humic
acids), which would falsify the test results, are kept away from the indicator liquid.
Since the current pH value in the aquarium water is directly linked to the carbonate
hardness and the CO
2
content, the pH value can be determined by the indicator
colouring as well as by the CO
2
content.
Why test?
Carbon dioxide (CO
2
) is the most important plant nutrient. The con
-
sumption of CO
2
differs from aquarium to aquarium and depends, amongst other
things, on the following factors: number and demands of plants, carbonate hard
-
ness, water movement and light. Fertilisation with CO
2
is usually done with a CO
2
fertiliser system. In the aquarium water, a CO
2
content between 15 and 30 mg / l is
recommended. This range is safe for fish and at the same time ensures luxuriant
plant growth. 20–25 mg/l CO
2
has proven to be ideal. In special aquariums with a
large number of plants, so-called scapes, higher values of up to 35 mg/l may be
required. With this test you can determine the CO
2
content of your aquarium water
in mg/l and thus monitor the setting of your CO
2
fertiliser system. The pH value,
which can be read off at the same time, also makes it possible to maintain the pH
value as constant as possible. This benefits the well-being of the fish and the health
of the aquatic plants, without requiring any additional measurements. Please note:
When fertilising with so-called liquid carbon, fertiliser monitoring with JBL PRO
AQUATEST Permanent CO
2
plus pH is not possible because these fertilisers do
not contain CO
2
but other carbon compounds. The indicator liquid therefore always
remains blue.
Procedure:
1. Remove the white cap and pour 35 drops of indicator liquid into the transparent
container.
2. Re-attach the white to the transparent container with the opening towards the
suction cup.
3. Move the indicator into a vertical position (with the suction cup at the bottom).
Make sure that an air cushion is formed in the opening of the white cap to
separate the indicator liquid from the aquarium water. Fix the indicator in the
aquarium at a place with a good water flow and as far away as possible from the
CO
2
diffuser.
4. Select the colour disc matching the KH in your aquarium and fasten it at the
outside of the aquarium (e.g. above the suction cup of the test device) together
with the colour disc for the CO
2
content. The colour disc adheres and can be
removed at any time and reattached elsewhere.
5. The indicator solution needs approx.
2–3 hours
to correctly display the CO
2
content.
6. Compare the indicator colour in the device with the colours on the correspond
-
ing colour discs and read off the current CO
2
content in mg/l as well as the pH
value. The colour levels on the colour discs show different areas: Yellow: value
too high; Green: value o.k.; Blue: value too low.
Changing the indicator liquid:
The indicator will slowly fade over time due to the influence of lighting. We therefore
recommend refilling the appliance
every 3–4 weeks
during the regular partial wa
-
ter change. At the same time carefully clean any algae coating off the transparent
container. Any stubborn algae deposits or lime scale can be removed with JBL
cleaning agents.
Correcting deviating CO
2
values:
Too low:
Add carbon dioxide to the aquarium using a JBL ProFlora CO
2
fertiliser
system.
Too high:
Aerate the aquarium using a JBL ProSilent air pump.
Correcting deviating pH values:
Too low:
Raise the pH value by adding JBL pH increasers. When using a CO
2
fertiliser system, reduce the CO
2
supply.
Too high:
Lower the pH value by adding CO
2
with a JBL ProFlora CO
2
fertiliser
system or by adding a JBL pH reducer.
Notice d’emploi
IMPORTANT:
toujours tenir les flacons compte-gouttes
verticalement
avec l’em
-
bout vers le bas et verser
sans bulles d’air.
Les compte-gouttes doivent être secs
de l’extérieur.
Stockage des réactifs:
Dans un endroit sec à température ambiante et dans
l’emballage d’origine.
JBL PRO AQUATEST CO
2
Permanent plus pH
Particularité:
JBL PRO AQUATEST CO
2
Permanent plus pH est un test perma
-
nent pour déterminer à la fois la teneur en dioxyde de carbone et le pH dans l’eau
douce. L’appareil d’analyse contient un indicateur liquide qui est séparé de l’eau
environnante par un coussin d’air. Tandis que le dioxyde de carbone peut traverser
librement ce coussin d’air, d’autres acides dissous dans l’eau de l’aquarium (p. ex.
des acides humiques), qui seraient susceptibles de fausser les résultats des tests,
sont tenus à l’écart. Le pH actuel de l’eau de l’aquarium étant directement lié à la
dureté carbonatée et à la teneur en CO
2
, la coloration de l’indicateur permet de
déterminer le pH en même temps que la teneur en CO
2
.
Pourquoi tester?
Le dioxyde de carbone (CO
2
) est le nutriment le plus important
des plantes. La consommation de CO
2
varie d’un aquarium à l’autre et dépend,
entre autres, des facteurs suivants : nombre et exigences des plantes, dureté car
-
bonatée, mouvements de l’eau et lumière. La fertilisation au CO
2
se fait en règle
générale par l’intermédiaire d’un kit de diffusion de CO
2
. Dans l’eau de l’aquarium,
il est recommandé d’avoir une teneur en CO
2
entre 15 et 30 mg/l. Cette fourchette
est sans danger pour les poissons et assure en même temps une excellente crois
-
fr
fr
